True. I’m not aware of a factory Kurz in any caliber other than these three. An original sporter in any of these calibers or configurations would be quite a prize. But never say never with Mauser. Speed’s book shows an Afrika Model with long barrel in 8 x 51, which must be a singular rarity. He also shows a very nice Griffin and Howe sporter in .300 Savage built on an original Kurz Mauser action.